研究了硫酸铵-水杨基荧光酮-乙醇体系萃取钨(Ⅵ)的行为及乙醇水溶液的分相条件。作为萃取溶剂的乙醇,既能萃取电中性的螯合物,又能萃取带电荷的螯合物。当溶液 pH=1~2,能使W(Ⅵ) 与 Fe(Ⅲ)、Cu(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Mn(Ⅱ) 分离。
The extraction behaviour of (NH4)2SO4-salicylfluorone-Ethanol system was studied and proper conditions were selected. The results show that W(Ⅵ) can be completely separated from Fe(Ⅲ)、Cu(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Mn(Ⅱ) by adding 3.5 g (NH4)2SO4 to 10 ml 30%(V/V) ethanol solution at pH=1~2.
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